Revert of cc: Delete all the RendererCapabilities.

cc/trees/proxy_main.cc

Index: cc/trees/proxy_main.cc
diff --git a/cc/trees/proxy_main.cc b/cc/trees/proxy_main.cc
index 9f3a1add77240eca8a87a262e243dd6a36c1b71b..04de28097a497ecacf39444e8f1d9bef3f04c1ee 100644
--- a/cc/trees/proxy_main.cc
+++ b/cc/trees/proxy_main.cc
@@ -76,6 +76,12 @@
   layer_tree_host_->DidCompleteSwapBuffers();
 }
 
+void ProxyMain::SetRendererCapabilities(
+    const RendererCapabilities& capabilities) {
+  DCHECK(IsMainThread());
+  renderer_capabilities_ = capabilities;
+}
+
 void ProxyMain::BeginMainFrameNotExpectedSoon() {
   TRACE_EVENT0("cc", "ProxyMain::BeginMainFrameNotExpectedSoon");
   DCHECK(IsMainThread());
@@ -105,14 +111,18 @@
   layer_tree_host_->RequestNewOutputSurface();
 }
 
-void ProxyMain::DidInitializeOutputSurface(bool success) {
+void ProxyMain::DidInitializeOutputSurface(
+    bool success,
+    const RendererCapabilities& capabilities) {
   TRACE_EVENT0("cc", "ProxyMain::DidInitializeOutputSurface");
   DCHECK(IsMainThread());
 
-  if (!success)
+  if (!success) {
     layer_tree_host_->DidFailToInitializeOutputSurface();
-  else
-    layer_tree_host_->DidInitializeOutputSurface();
+    return;
+  }
+  renderer_capabilities_ = capabilities;
+  layer_tree_host_->DidInitializeOutputSurface();
 }
 
 void ProxyMain::DidCompletePageScaleAnimation() {
@@ -268,6 +278,12 @@
 void ProxyMain::SetVisible(bool visible) {
   TRACE_EVENT1("cc", "ProxyMain::SetVisible", "visible", visible);
   channel_main_->SetVisibleOnImpl(visible);
+}
+
+const RendererCapabilities& ProxyMain::GetRendererCapabilities() const {
+  DCHECK(IsMainThread());
+  DCHECK(!layer_tree_host_->output_surface_lost());
+  return renderer_capabilities_;
 }
 
 void ProxyMain::SetNeedsAnimate() {